Re: st: impute with draws from random distribution

[D-Ta <altruist81@gmx.de>]

So, whats a valid comparison group then in your opinion, taking into 
account the timing of the training? Or should I neglect that information 
about the timing completing when matching?


Best

Darjusch

Am 22.06.2011 13:29, schrieb Maarten Buis:
> On Wed, Jun 22, 2011 at 11:32 AM, D-Ta wrote:
> > Otherwise, the start date cannot be used as a control variable in the
> > matching approach. With your advice to generate dummies for missing values
> > (and to control for those) you cant (by definition) reach common supported
> > between the treated and the comparison group.
>
> The strength of matching is that it prevents you from comparing groups
> that cannot be compared. You try to circumvent that strength, which is
> not a good idea.
>
> Hope this helps,
> Maarten
>
> --------------------------
> Maarten L. Buis
> Institut fuer Soziologie
> Universitaet Tuebingen
> Wilhelmstrasse 36
> 72074 Tuebingen
> Germany
>
>
> http://www.maartenbuis.nl
> --------------------------
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